1 /* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
2 /* Copyright (c) 2020 Mellanox Technologies Ltd. */
4 #ifndef __MLX5_VDPA_H__
5 #define __MLX5_VDPA_H__
7 #include <linux/etherdevice.h>
8 #include <linux/vringh.h>
9 #include <linux/vdpa.h>
10 #include <linux/mlx5/driver.h>
12 #define MLX5V_ETH_HARD_MTU (ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN)
14 struct mlx5_vdpa_direct_mr {
18 struct mlx5_core_mkey mr;
19 struct sg_table sg_head;
23 struct list_head list;
28 struct mlx5_core_mkey mkey;
30 /* list of direct MRs descendants of this indirect mr */
31 struct list_head head;
32 unsigned long num_directs;
33 unsigned long num_klms;
36 /* serialize mkey creation and destruction */
37 struct mutex mkey_mtx;
41 struct mlx5_vdpa_resources {
43 struct mlx5_uars_page *uar;
44 void __iomem *kick_addr;
51 struct mlx5_control_vq {
52 struct vhost_iotlb *iotlb;
53 /* spinlock to synchronize iommu table */
54 spinlock_t iommu_lock;
60 struct vdpa_callback event_cb;
61 struct vringh_kiov riov;
62 struct vringh_kiov wiov;
66 struct mlx5_ctrl_wq_ent {
67 struct work_struct work;
68 struct mlx5_vdpa_dev *mvdev;
71 struct mlx5_vdpa_dev {
72 struct vdpa_device vdev;
73 struct mlx5_core_dev *mdev;
74 struct mlx5_vdpa_resources res;
83 struct mlx5_vdpa_mr mr;
84 struct mlx5_control_vq cvq;
85 struct workqueue_struct *wq;
88 int mlx5_vdpa_alloc_pd(struct mlx5_vdpa_dev *dev, u32 *pdn, u16 uid);
89 int mlx5_vdpa_dealloc_pd(struct mlx5_vdpa_dev *dev, u32 pdn, u16 uid);
90 int mlx5_vdpa_get_null_mkey(struct mlx5_vdpa_dev *dev, u32 *null_mkey);
91 int mlx5_vdpa_create_tis(struct mlx5_vdpa_dev *mvdev, void *in, u32 *tisn);
92 void mlx5_vdpa_destroy_tis(struct mlx5_vdpa_dev *mvdev, u32 tisn);
93 int mlx5_vdpa_create_rqt(struct mlx5_vdpa_dev *mvdev, void *in, int inlen, u32 *rqtn);
94 int mlx5_vdpa_modify_rqt(struct mlx5_vdpa_dev *mvdev, void *in, int inlen, u32 rqtn);
95 void mlx5_vdpa_destroy_rqt(struct mlx5_vdpa_dev *mvdev, u32 rqtn);
96 int mlx5_vdpa_create_tir(struct mlx5_vdpa_dev *mvdev, void *in, u32 *tirn);
97 void mlx5_vdpa_destroy_tir(struct mlx5_vdpa_dev *mvdev, u32 tirn);
98 int mlx5_vdpa_alloc_transport_domain(struct mlx5_vdpa_dev *mvdev, u32 *tdn);
99 void mlx5_vdpa_dealloc_transport_domain(struct mlx5_vdpa_dev *mvdev, u32 tdn);
100 int mlx5_vdpa_alloc_resources(struct mlx5_vdpa_dev *mvdev);
101 void mlx5_vdpa_free_resources(struct mlx5_vdpa_dev *mvdev);
102 int mlx5_vdpa_create_mkey(struct mlx5_vdpa_dev *mvdev, struct mlx5_core_mkey *mkey, u32 *in,
104 int mlx5_vdpa_destroy_mkey(struct mlx5_vdpa_dev *mvdev, struct mlx5_core_mkey *mkey);
105 int mlx5_vdpa_handle_set_map(struct mlx5_vdpa_dev *mvdev, struct vhost_iotlb *iotlb,
107 int mlx5_vdpa_create_mr(struct mlx5_vdpa_dev *mvdev, struct vhost_iotlb *iotlb);
108 void mlx5_vdpa_destroy_mr(struct mlx5_vdpa_dev *mvdev);
110 #define mlx5_vdpa_warn(__dev, format, ...) \
111 dev_warn((__dev)->mdev->device, "%s:%d:(pid %d) warning: " format, __func__, __LINE__, \
112 current->pid, ##__VA_ARGS__)
114 #define mlx5_vdpa_info(__dev, format, ...) \
115 dev_info((__dev)->mdev->device, "%s:%d:(pid %d): " format, __func__, __LINE__, \
116 current->pid, ##__VA_ARGS__)
118 #define mlx5_vdpa_dbg(__dev, format, ...) \
119 dev_debug((__dev)->mdev->device, "%s:%d:(pid %d): " format, __func__, __LINE__, \
120 current->pid, ##__VA_ARGS__)
122 #endif /* __MLX5_VDPA_H__ */